<?php

/**
 * A field that links to the user contact page, if access is permitted.
 */
class views_handler_field_contact_link extends views_handler_field_user_link {

    function option_definition() {
        $options = parent::option_definition();
        $options['link_display'] = array('default' => 'link', 'translatable' => FALSE);
        return $options;
    }

    function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);
        $form['link_display'] = array(
            '#title' => t('Type of link'),
            '#default_value' => $this->options['link_display'],
            '#type' => 'select',
            '#options' => array(
                'link' => t('Link'),
                'icon' => t('Icon'),
            ),
        );
        $form['text']['#title'] = t('Link label');
        $form['text']['#required'] = TRUE;
        $form['text']['#default_value'] = empty($this->options['text']) ? t('contact') : $this->options['text'];
    }

    // An example of field level access control.
    // We must override the access method in the parent class, as that requires
    // the 'access user profiles' permission, which the contact form does not.
    function access() {
        global $user;

        // Only registered users can view other registered user's contact page.
        if (empty($user->uid)) {
            return FALSE;
        }

        return TRUE;
    }

    function render($values) {
        global $user;
        $uid = $values->{$this->aliases['uid']};

        if (empty($uid)) {
            return;
        }

        $account = user_load($uid);
        if (empty($account)) {
            return;
        }

        // Check access when we pull up the user account so we know
        // if the user has made the contact page available.
        $menu_item = menu_get_item("user/$uid/contact");
        if (!$menu_item['access'] || empty($account->contact)) {
            return;
        }

        if ($this->options['link_display'] == 'icon') {
            return l(theme('image', 'misc/forum-new.png'), 'user/' . $account->uid . '/contact', array('html' => TRUE, 'attributes' => array('title' => t('Contact %user', array('%user' => $account->name)))));
        } else {
            return l($this->options['text'], 'user/' . $account->uid . '/contact', array('attributes' => array('title' => t('Contact %user', array('%user' => $account->name)))));
        }
    }

}

